Amnesty Generator is a free utility that converts any Google webpage gadget into a Dashboard widget.

Using Google's new Add to your webpage feature, select a webpage gadget, copy and paste its HTML code directly into the Amnesty Generator window, tweak some settings (if you wish) and generate a new widget with the click of a button. From there, you can install your new widgets into Apple's Dashboard, or even convert them into standalone OS X applications with Amnesty Singles.